23983-65-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23983-65-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,9,8 and 3 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 23983-65:
(7*2)+(6*3)+(5*9)+(4*8)+(3*3)+(2*6)+(1*5)=135
135 % 10 = 5
So 23983-65-5 is a valid CAS Registry Number.